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（请给出正确答案）
( ) is an important concept since it allows reuse of a class definition without requiring major code changes.
A.Inheritance
B.Polymorphism
C.Encapsulation
D.DatA.hiding
B.Polymorphism
C.Encapsulation
D.DatA.hiding
参考答案
参考解析
解析：继承是一个重要的概念，因为它使得无需对代码做大的改变就能重用类定义。
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